Real Sky Studio

[Rudi]

As a quick solution you could bake your sky:

Presets > prime > light setups > BakeEnvironment

It will render the sky onto a sphere which you can then be textured back onto a regular sky

This was posted by imashination over at CG Talk.

Can you give me a little Step by Step tutorial please?

[NVN]

make a sphere in the middle of your scene.
Put a 100% glossy material on it and bake the reflection...thats all

[Rudi]

Danke